Cap.



W. MILLER.

CAP.

APPLICATION FILED JAN.26. 1916.

Patented Apr. 4, 1916 Suwutoz v WILBUR \"HLLER atto' nneq wmwtw-wm ELLE I" the rim i'th U16 stem 1 here en- 6Q a and e inner wall Contact therew 12eaded upon the i fie ends 03 its chambers ea eng'.

1 nah H an i Q P Pd n0 n h o mo 80 mm 1 1 On 3 p npn 1 LL own the ii 11- with its outer n1" membe d with .ith the ments in and im 15 be read operqtlve const 0 v99 10. g v e mbl 1 S I space irie 0 9 uww i n w e t La 1b 1 mru h w .5 @LM u an N in- 1st de- '1 and agail nember d famed I gceii to when 6.] 1s m AL maintained 1 xml 1'0- z a F 9 cap C A, pre- 5 t0 18- 19$ Mia 51 a can pa ifih niches 39s or pockets 1 hereby t in 2h 17, 1001 nd i i the mner on, and

the finece'ss-es 15 1e mem- 1m r mi retail 1 the 1 exp zmslb par-an 11st ax JOE self-evident iv aid seziied tto those skilled in the art to which my invention appertains, that the cap C may be readily and effectively applied to or removed from operative position relative to the stem 1 and that said cap is effectively locked in applied position. It will also be self-evident that the possibility ofthe cap C working loose is eliminated.

' From the foregoing description, it is thought to be obvious that a cap constructed in accordance with my invention is of an extremely simple and comparatively inexpensive nature and is particularly Well adapted for use by reason of the convenience and facility with which it may be assembled, and it will also be obvious. that my invention is susceptible of sdme change and modification without material departure from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts hereinshown in carrying out my invention in practice.

I claim:

In combination with a valve stem having its periphery threaded and provided with a flattened face extending longitudinally thereof, a collar threaded upon the stem and having the outer end of its bore enlarged to afford a chamber surrounding the stem, at bushing detachably engaged within the enlarged bore of the collar, said bushing hav ing its bore of a diameter in excess or the maximum diameter of the stem and provided with in adly disposed fingers adja-' cent its outer face, an annular member positioned within the chamber afforded by the enlarged portion of the bore of the collar and the bushing and slidably engaged with the stem, the bore of said annular member being provided with a straight edge coacting with the flattened face of the stem whereby said annular member is held against rotation independently of the stem, an expansible member within the chamber afforded by the enlarged end of the bore of the collar and the coacting bushing and constantly urging the annular member out- \vardly said fingers serving to limit the out ward movement or" the annular member, and a cap for the stem closed at one end and having its open end provided with an outstanding annular fiange provided with notches through which the fingers of the bushing are adapted to pass so that the flange of the cap may be engaged beneath the fingers of the bushing upon axial rotation of the cap. the annular flange f the cap being provided in its outer face intermediate the notches with recesses to receive the fin 'crs of the bushin to hold the ca a s P against rotation when in operative position. In testimony whereof I hereunto aflix my signature in the presence of two witnesses. \VILBUR MILLER. Witnesses Jonn F. PooLn, Gnonon G. Frrrnns. 

